Question

Can you use the Law of Sines if you are given a = 31, b = 52 and ? Why or why not?

Answer 1

No, you need at least angle A or angle B?

Answer 2

@Zelda: What if a and b is hypotenus and a leg of a right triangle?

Answer 3

Then you know the angle opposite the hypotunuse is 90 degrees, so you're good :D

Answer 4

ok. so what is the answer

Answer 5

Depends on what the triangle looks like, draw me the triangle

Answer 6

. you can compute cos and sin of the theta, right?

Answer 7

I'm sorry, a must be a leg, not is hypotenuse

Answer 8

So this is a right triangle right?

Answer 9

Hmm, you can tell from that too :D

You have and b, so do pythagorean theorem, once you have hyp, you can start using law of sinces to find angles.

Answer 10

yes. since the problem doesn't tell us whether the angle between a and b. whenever solve for that, you must list all of the cases can happen. if choosing one, my answer is yes

Answer 11

Law of Sines*

Answer 12

cos , too